<h4>Tool</h4><table border="0"><tr><td valign="top"><b>Name</b></td><td valign="top">Effective Air Flow Heights</td></tr><tr><td valign="top"><b>ID</b></td><td valign="top">11</td></tr><tr><td valign="top"><b>Author</b></td><td valign="top">J.Boehner, O.Conrad (c) 2008</td></tr><tr><td valign="top"><b>Specification</b></td><td valign="top">grid</td></tr></table><hr><h4>Description</h4>
References:
- Boehner, J., Antonic, O. (2009): 'Land-surface parameters specific to topo-climatology'. in: Hengl, T., Reuter, H. (Eds.): 'Geomorphometry - Concepts, Software, Applications'. Developments in Soil Science, Volume 33, p.195-226, Elsevier.
<hr><h4>Parameters</h4><table border="1" width="100%" valign="top" cellpadding="5" rules="all"><tr><th>Name</th><th>Type</th><th>Identifier</th><th>Description</th><th>Constraints</th></tr>
<tr><th colspan="5">Input</th></tr><tr><td>Elevation </td><td>Grid (input)</td><td>DEM</td><td></td><td></td></tr><tr><td>Wind Direction (*)</td><td>Grid (optional input)</td><td>DIR</td><td>Direction into which the wind blows, starting with 0 for North and increasing clockwise.</td><td></td></tr><tr><td>Wind Speed (*)</td><td>Grid (optional input)</td><td>LEN</td><td></td><td></td></tr><tr><th colspan="5">Output</th></tr><tr><td>Effective Air Flow Heights</td><td>Grid (output)</td><td>AFH</td><td></td><td></td></tr><tr><th colspan="5">Options</th></tr><tr><td>Wind Direction Units</td><td>Choice</td><td>DIR_UNITS</td><td></td><td>Available Choices:
[0] radians
[1] degree
Default: 0</td></tr><tr><td>Scaling</td><td>Floating point</td><td>LEN_SCALE</td><td></td><td>Default: 1.000000</td></tr><tr><td>Search Distance [km]</td><td>Floating point</td><td>MAXDIST</td><td></td><td>Minimum: 0.000000
Default: 300.000000</td></tr><tr><td>Constant Wind Direction</td><td>Floating point</td><td>DIR_CONST</td><td>constant direction into the wind blows, given as degree</td><td>Default: 135.000000</td></tr><tr><td>Old Version</td><td>Boolean</td><td>OLDVER</td><td>use old version for constant wind direction (no acceleration and averaging option)</td><td>Default: 0</td></tr><tr><td>Acceleration</td><td>Floating point</td><td>ACCEL</td><td></td><td>Minimum: 1.000000
Default: 1.500000</td></tr><tr><td>Elevation Averaging</td><td>Boolean</td><td>PYRAMIDS</td><td>use more averaged elevations when looking at increasing distances</td><td>Default: 0</td></tr><tr><td>Windward Factor</td><td>Floating point</td><td>LEE</td><td></td><td>Default: 0.500000</td></tr><tr><td>Luv Factor</td><td>Floating point</td><td>LUV</td><td></td><td>Default: 1.000000</td></tr></table>(*) <i>optional</i>